PMAX axial impellers · Designed for demanding off‑highway, agricultural, and industrial machinery

Overview

ONE SOLUTION.
EVERY SCALE.

PMAX engine cooling impellers are built to perform under pressure. Designed for demanding off‑highway, agricultural, and industrial machinery, PMAX delivers high‑volume airflow with low noise and low energy use.

From excavators and wheel loaders to Industrial Gen-set applications and mining equipment, PMAX is the impeller of choice for those who demand more from their cooling. With advanced blade geometries and rugged construction, PMAX adapts easily to your system and workload. Season after season.

Up to 3 dB(A) lower noise
emissions using optimized blade and hub geometry

More airflow. Less effort.
Up to 18% lower fan power consumption with PMAX fans

Why choose
PMAX?

Higher airflow and pressure – same power draw

Tough, field-tested materials and durable design

Modular construction for easy customization

Quieter operation for more efficient systems

PMAX impeller range from 12.76 to 78.74 inch

Benefits

Engineered for reliability

When heat, dust, and pressure push your equipment to its limits, PMAX keeps its cool. Offering higher airflow and pressure at the same power draw, PMAX combines tough, field‑tested materials with a durable, modular design for easy customization.

Quieter operation means more efficient systems, while a wide impeller range from 324 to 2000 mm ensures the right fit for virtually any powertrain cooling application.

Engineered for reliability

One‑piece molded Range

The O‑P1 and O‑PMAX one‑piece molded fans are purpose‑built for Tier 4F, Tier 5, Stage V, and hybrid powertrains. Durable and efficient, they excel in high‑pressure applications requiring low noise emissions.

Applications include tractors, farm loaders, backhoe loaders, 10–15T excavators, and small construction machinery – making PMAX the versatile solution across industries.

O-P1

324–508 mm

O-PMAX2

360–520 mm

O-PMAX3

432–600 mm

O-PMAX4

540–762 mm

Cooling that works as hard as you do

From road construction and material handling to dozers, dumpers, cranes, and gensets, PMAX ensures reliable cooling that keeps your machines efficient, durable, and ready for the toughest jobs.

APPLICATIONS

Excavators, Wheel loaders, Dozers, Dump trucks, Cranes, Tractor, Gensets, Rollers

Performance

Optimiser for
impeller selection

Optimiser is Multi-Wing’s product selection software which helps our customers to opt for the best axial fan solution matching their specific demands.

Try the optimiser

850/6–6L/PMAX4 @1800 RPM with 1% Tip Clearance

Inlet types available in the optimiser tool

Bellmouth

Airflow

Orifice plate

Airflow

Orifice Plate + Motor Plate

Airflow

Airflow direction arrow long

Specs

Technical
Specifications

Modular range

Product

PMAX3

PMAX4

PMAX5

PMAX7

PMAX8

Hub Size

9–9

6–6

6–6 L

7–7

8–8

9–9

9–9 L

6–12

8–16

5–5

6–6

7–7

8–8

9–9

5–10 / 10–10

5–5

7–7

5–5

6–6

7–7

8–8

9–9

5–10

Diameter Range (mm)

356–640

499–748

633–850

499–756

561–836

499–770

561–850

633–850

633–945

713–1,080

713–1,118

713–1,186

802–1,276

998–1,422

1,114–1,600

1,247–1,803

1,247–1,842

1,247–1,912

1,426–2,000

Rotation

L & R

Performance

Orifice plate FOOS 0–60%

Orifice + Motor plate FOOS 0–60%

Bellmouth

Orifice plate FOOS 0–60%

Orifice + Motor plate FOOS 0–60%

Bellmouth

Orifice plate FOOS 0–60%

Orifice + Motor plate FOOS 0–60%

Bellmouth

Orifice plate FOOS 0–60%

Orifice + Motor plate FOOS 0–60%

Orifice plate FOOS 0–60%

Bellmouth

Engine Cooling Range

o-P1L

o-PMAX2

o-PMAX3

PMAX3

o-PMAX4

PMAX4

PMAX5

PMAX7

PMAX8

Diameter Range (mm)

324–508 mm

360–520 mm

432–600 mm

356–640 mm

540–762 mm

499–945 mm

713–1,276 mm

998–1,600 mm

1,247–2,000 mm

500

1,000

1,500

2,000